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nlexa [21]
3 years ago
8

A sofa is on sale for $283.80, which is

Mathematics
2 answers:
Cloud [144]3 years ago
8 0
473.94 is the correct answer
ikadub [295]3 years ago
4 0
283.80 + 67% = 473.94
I believe that is it
You might be interested in
4.
zubka84 [21]

Answer:

See Explanation Below

Step-by-step explanation:

Given

(sin x - cos x)^2 = sec^2x - tan^2x - 2sinx.cos x.

Required

Prove

To start with; we open the bracket on the left hand side

(sin x - cos x)^2 = (sin x - cos x)(sin x - cos x)

(sin x - cos x)^2 = (sin x )(sin x - cos x)- (cos x)(sin x - cos x)

(sin x - cos x)^2 = sin^2 x -sinx cos x - sin xcos x + cos^2 x

(sin x - cos x)^2 = sin^2 x -2sinx cos x + cos^2 x

Reorder

(sin x - cos x)^2 = sin^2 x + cos^2 x - 2sinx cos x

From trigonometry;

sin^2x + cos^2x = 1

So;

(sin x - cos x)^2 = sin^2 x + cos^2 x - 2sinx cos x

becomes

(sin x - cos x)^2 = 1 - 2sinx cos x

Also from trigonometry;

sec^2x - tan^2x = 1

So,  

(sin x - cos x)^2 = 1 - 2sinx cos x

becomes

(sin x - cos x)^2 = sec^2x - tan^2x  - 2sinx cos x

Proved

3 0
3 years ago
Solve each equation.<br> 1. x+6=4<br> 2.x- -4 = -6<br> 3.2(x-1)=-200<br> 4.2x+-3=-23
ziro4ka [17]

Step-by-step explanation:

1) x+6 =4

x. =4-6

x. =-2

2) x-(-4) =-6

x+ 4. =-6

x. =-6-4

x. =-10

3)2(x-1)=-200

2x-2 =-200

2x. = -200+2

2x. = -198

x. = -198/2

x. = -99

4)2x+(-3) =-23

2x-3. =-23

2x. =-23+3

2x. =-20

x. =-20/2

x. = -10

3 0
2 years ago
Find the Common Denominator of 3/12 and 7/12<br><br><br> show your work
ruslelena [56]
The common denominator is already there 12 is the common denominator!! :)
4 0
3 years ago
Read 2 more answers
PLEASE HELP I WILL MARK BRAINLIEST!!!
yawa3891 [41]

Answer:

5 lines we can draw using 2 points

5 0
1 year ago
Can you please help me?
Harlamova29_29 [7]

Answer: No

Step-by-step explanation: Because.

8 0
3 years ago
Read 2 more answers
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